Homebrew PCBs

>                                                       . I think
> > this is the secret of successful pcb edm'ing.
> >
> > This is really looking as if direct raw copper board
> > to finished pcb is going to be possible.
> >
> > Roger

Roger, it works, for sure at the beginning, when there are enough copper
to create the opposite polarity/electrode, but how you manage to fire 
the last sparks,
when there are no more connection to the opposite polarity/electrode?
Are you advancing line by line in horizontal lines?

Could you explain your bmp to Machine software?
Cristian